netdev - Re: [PATCH 3/3] net: core: add IFLA

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 11 Mar 2010 12:26:39 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	shemminger@...tta.com
Cc:	jengelh@...ozas.de, netdev@...r.kernel.org
Subject: Re: [PATCH 3/3] net: core: add IFLA_STATS64 support

From: Stephen Hemminger <shemminger@...tta.com>
Date: Thu, 11 Mar 2010 12:12:39 -0800

> On Thu, 11 Mar 2010 20:57:29 +0100
> Jan Engelhardt <jengelh@...ozas.de> wrote:
> 
>> `ip -s link` shows interface counters truncated to 32 bit. This is
>> because interface statistics are transported only in 32-bit quantity
>> to userspace. This commit adds a new IFLA_STATS64 attribute that
>> exports them in full 64 bit.
>> 
>> References: http://lkml.indiana.edu/hypermail/linux/kernel/0307.3/0215.html
>> Signed-off-by: Jan Engelhardt <jengelh@...ozas.de>
>> 
> 
> What is the point since net_device_stats has only 32 bit counters.
> The last time this came up the issue was is that is not possible
> to atomically increment a 64 bit counter on most 32 bit platforms.

On 64-bit it has 64-bit counters, yet we only report 32-bit
counters to userspace via netlink even in that case.

That's what Jan is fixing here.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html